Traditional Basque dances are always accompanied by Basque instruments, including the txistu, txirula, tamboril and accordion. These dances have evolved over many years from traditional ceremonies to social customs. Village dance has always been a way of reflecting heritage, with local Basque costumes, and womans espadrilles are often worn by the dancers. The Basque txistu itself is a traditional fipple flute that later became the symbol of the Basque revival. The pipe has three holes and can be played in one hand so that another percussion instrument can be played at the same time. Originally made from different kinds of black wood, today, it can also be found in plastic and has a mouthpiece made from metal. It is normally found in the key of F to produce a loud sound. These beautiful flutes have a long history and an unbroken tradition in the Basque country, together with the dances which are still performed today.